What do all living organisms do

Paper instructions:
This is just a study guide so it doesn’t have to be formal. you can answer all the questions without worrying about grammar & format. The answer doesn’t have to be long and detailed; if it can be explained in five words, do it,

as long as it’s accurate. See the questions below

What do all living organisms do? (hint: 4 things); Surface to Volume Ratio (compare big to small organisms),
Atom (what is it and what is it made from); the 4 elements that make up living organisms; why antioxidants are good; What are the 4 main molecules that make up living organisms; What are the main functions of each of

these types of molecules;

Three Primary tissues; layers of the skin (2 main layers);

Skeletal System
Two main regions of the skeleton; regions of the spine; bones of the arm and leg; ball and socket joints;

Muscular:
three types of muscle and the function of each; the BASICS or muscle contraction; 2 types of muscle contraction; fast and slow muscle fibers, which type of athlete would have which kind of muscles?;

Immune system
Cold vs the flu; what is a virus? What is a bacteria? Which is killed by antibiotics?; know the components of the: FIRST LINE OF DEFENSE; SECOND LINE OF DEFENSE; THIRD LINE OF DEFENSE; what is

immunity? How do you acquire immunity? Why is the flu a serious disease (I am not referring to the flu you typically get)

Cardiovascular system
Know the chambers of the heart; Sino-Atrial Node; Atrio-ventrical Node’ Blood flow through the heart and out to the body, and blood returning to the heart. Function of the valves in the heart; Arteries, veins and capillaries

(structure and function); the basics of the electrocardiogram (EKG); blood pressure (what is systole and diastole?) (and problems and causes of hypertension). What is a heart attack?

Respiratory system
Be able to describe the mechanism of inhalation and exhalation (what is the major muscle responsible, and what does it do to facilitate inhalation and exhalation) ? What is the difference between respiration and breathing?